diff --git a/nipap-www/pyproject.toml b/nipap-www/pyproject.toml
index 9ed83a8dc..5ae349871 100644
--- a/nipap-www/pyproject.toml
+++ b/nipap-www/pyproject.toml
@@ -14,7 +14,7 @@ classifiers = [
 ]
 keywords = ["nipap"]
 dependencies = [
-  "Flask==3.0.3",
+  "Flask==3.1.3",
   "Jinja2==3.1.6",
   "nipap",
   "pynipap",